Title :
Dual-channel-spacing phased-array waveguide grating multi/demultiplexers
Author :
Lin, Wenhua ; Li, Haifeng ; Chen, Y.J. ; Dagenais, M. ; Stone, D.
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Maryland Univ., Baltimore, MD, USA
Abstract :
A novel multi/demultiplexer with dual-channel-spacing operation has been demonstrated for the first time, by utilizing the asymmetric I/O-port feature of a phased-array waveguide grating device. The multi/demultiplexer operates at both constant-wavelength (2 nm) and constant-frequency (200 GHz) channel-spacing standards. The center wavelength/frequency is adaptive to processing variations and can be alterable in unit of 0.4 nm and 50 GHz, respectively. The device exhibits a low fiber-to-fiber insertion loss of 4.8-5.2 dB and a crosstalk rejection better than -20 dB. This dual-channel-sparing WDM multi/demultiplexer device offers good performance, flexibility and integratability. It can serve as a key integrated device for dense WDM systems.
Keywords :
demultiplexing equipment; diffraction gratings; integrated optics; multiplexing equipment; optical communication equipment; optical crosstalk; optical fibre losses; optical waveguides; wavelength division multiplexing; 2 nm; 200 GHz; 4.8 to 5.2 dB; asymmetric I/O-port feature; center wavelength/frequency; channel-spacing standards; constant-frequency; constant-wavelength; crosstalk rejection; dense WDM systems; dual-channel-spacing operation; dual-channel-spacing phased-array waveguide grating multi/demultiplexers; dual-channel-sparing WDM multi/demultiplexer device; flexibility; good performance; integratability; integrated device; low fiber-to-fiber insertion loss; phased-array waveguide grating device; processing variations; Arrayed waveguide gratings; Channel spacing; Diffraction gratings; Frequency; Insertion loss; Optical fiber devices; Optical waveguides; Phased arrays; Slabs; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
